| 测锅具温度检测电路cN4插口（2）脚对地电压为+0.25V，正常；测IGBT温度检测电路CN3插口（1）脚对地电压为0V（正常为+0.35V）。用R×10k挡测IGBT温度检测电路，发现热敏电阻开路受损。更换热敏电阻后整机恢复正常。 |
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